upperleft: convert the first n-characters of a string to upper-case...

In datana: Datasets and Functions to Accompany Analisis De Datos Con R

convert the first n-characters of a string to upper-case letters.

Description

Function to upper-case the first n-characters of a string from the left-hand side.

Usage

upperleft(fac, n = 1)

Arguments

fac	is an object of class string or factor
n	is the number of characters to be converted of a the string given in fac.

Details

It is specially set to arrange data vector having alphanumeric (i.e., letters) format.

Value

This function returns an object having the first n-characters from the left-hand side in upper-case.

Author(s)

Christian Salas-Eljatib

References

Salas-Eljatib, C. 2021. Análisis de datos con el programa estadístico R: una introducción aplicada. Ediciones Universidad Mayor, Santiago, Chile. 170 p. https://eljatib.com/rlibro

Examples

fac.x<-"willkommen"
upperleft(fac.x)
upperleft(fac.x,n = 2)
upperleft(fac.x,2)
upperleft(fac.x,3)
#A longer vector of characters
fac.x<-c("willkommen","welcome","bem-vindo","bievenido")
upperleft(fac.x,1)

datana documentation built on Aug. 18, 2025, 5:18 p.m.